Shot blasting tool for casting impeller pump shell through lost wax method

Abstract

The utility model relates to a shot blasting tool for casting an impeller pump shell by a lost wax method. The shot blasting tool is characterized by comprising a positioning shaft, a rotary tray, a limiting unit and a driving module, according to the utility model, the rotary tray structure of which the direction can be manually adjusted is adopted to support the impeller pump shell for shot blasting treatment, so that the angle of the impeller pump shell can be adjusted, and a treatment omission area is avoided; besides, a limiting guide groove is formed in the surface of the rotary tray, a spring is connected with a limiting check block, the limiting check block is tensioned through elastic potential energy of the spring, the end of the limiting check block can penetrate through a center position hole of the impeller pump shell, and the edge of the center position hole of the impeller pump shell is tensioned and limited. And it is guaranteed that the impeller pump shell is in a stable state in the shot blasting treatment process.

Description

Technical Field

[0001] This utility model relates to the field of lost-wax casting technology, and in particular to a shot blasting fixture for casting impeller pump housings using the lost-wax method. Background Technology

[0002] Lost-wax casting is a common method for producing impeller pump casings. After the impeller pump casing is cast, it needs to be shot blasted. Shot blasting machines are electrically driven, and the shot is accelerated by centrifugal force and thrown onto the surface to be cleaned to achieve the cleaning effect. It is widely used in the machinery industry.

[0003] When shot blasting impeller pump casings, the common method is to place the impeller pump casing directly inside the shot blasting machine. This method is neither fixed nor easy to adjust the angle of placement. As a result, some areas of the impeller pump casing may not be treated satisfactorily during shot blasting, and the impeller pump casing may also shift due to vibration inside the shot blasting machine, affecting the shot blasting area on the surface of the impeller pump casing. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a shot blasting fixture for lost-wax casting of impeller pump casings, which can solve the problems of poor stability and inconvenience in adjusting the position of impeller pump casings when they are directly placed in shot blasting.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a shot blasting tool for lost-wax casting of impeller pump housing, the innovation of which is: including a positioning shaft, a rotary tray, a limiting unit and a drive module;

[0006] The positioning shaft is installed vertically inside the shot blasting machine;

[0007] The rotary tray is disc-shaped and is located on the top of the positioning shaft. A bearing hole is provided at the center of the lower surface of the rotary tray, and a thrust bearing is provided in the bearing hole and connected to the top of the positioning shaft. The rotary tray can rotate horizontally around the positioning shaft. A limit guide groove is provided in a cross shape on the upper surface of the rotary tray.

[0008] The limiting unit includes limiting blocks and springs; there are four limiting blocks, each disposed in a limiting guide groove of the rotary tray; there are four springs, each disposed in a limiting guide groove corresponding to a limiting block, with one end of the spring connected to the limiting block and the other end connected to the inner wall of the limiting guide groove. The springs use their elastic potential energy to pull the limiting blocks together, thereby limiting and fixing the impeller pump housing placed on the rotary tray.

[0009] The drive module includes a rotating block, a pry bar, and a positioning block. The rotating block is mounted on the lower surface of the rotary tray, and a hinge groove is horizontally provided on the lower surface of the rotating block. A pry bar is hinged in the hinge groove of the rotating block, and the pry bar can rotate in the vertical direction. Both ends of the pry bar extend out of the hinge groove of the rotating block. The positioning block is nested on the positioning shaft, and several positioning grooves are provided on the positioning block along the circumference. One end of the pry bar cooperates with the positioning groove on the positioning block to fix the rotary tray after it has rotated into place.

[0010] Furthermore, a flange is provided at the bottom end of the positioning shaft, which is connected to the inner wall of the bottom end of the shot blasting machine.

[0011] Furthermore, a sliding groove is provided on the inner wall of the limiting guide groove, and a slider is provided on the side of the limiting block to cooperate with the sliding groove.

[0012] Furthermore, the limiting block has an L-shaped structure, and one end of the limiting block protrudes from the upper surface of the upper limit guide groove of the rotary tray, which is used to hook the impeller pump housing to limit and fix the impeller pump housing placed on the rotary tray.

[0013] The advantages of this utility model are:

[0014] 1) In this utility model, a rotary tray structure with manually adjustable orientation is used to support the impeller pump housing for shot blasting. The angle of the impeller pump housing can be adjusted to avoid missing any areas. In addition, by setting a limiting guide groove on the surface of the rotary tray and using a spring to connect the limiting block, the elastic potential energy of the spring is used to tighten the limiting block. The end of the limiting block can pass through the center position hole of the impeller pump housing to tighten and limit the edge of the center position hole of the impeller pump housing, ensuring that the impeller pump housing is in a stable state during the shot blasting process. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of a shot blasting fixture for a lost-wax casting impeller pump casing according to the present invention.

[0017] Figure 2 This is a cross-sectional schematic diagram of a shot blasting fixture for a lost-wax casting impeller pump casing according to the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of a shot blasting tooling drive module for a lost-wax casting impeller pump casing according to the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 3 The shot blasting fixture shown is for a lost-wax casting impeller pump casing, including a positioning shaft 1, a rotary tray 2, a limiting unit 3, and a drive module 4.

[0022] Positioning shaft 1 is installed vertically inside the shot blasting machine.

[0023] The rotary tray 2 is disc-shaped and is located on the top of the positioning shaft 1. A bearing hole is provided at the center of the lower surface of the rotary tray 2, and a thrust bearing is provided in the bearing hole and connected to the top of the positioning shaft 1. The rotary tray 2 can rotate around the positioning shaft in the horizontal direction. A limit guide groove 21 is provided in a cross shape on the upper surface of the rotary tray 2.

[0024] The limiting unit 3 includes a limiting block 31 and a spring 32. There are four limiting blocks 31, which are respectively disposed in the limiting guide groove 21 of the rotary tray 2. There are four springs 32, which are respectively disposed in the limiting guide groove 21 corresponding to each limiting block 31. One end of the spring 32 is connected to the limiting block 31, and the other end of the spring 32 is connected to the inner wall of the limiting guide groove 21. The elastic potential energy of the spring 32 pulls the limiting block 31 to achieve limiting and fixing of the impeller pump casing placed on the rotary tray 2.

[0025] The drive module 4 includes a rotating block 41, a pry bar 42, and a positioning block 43. The rotating block 41 is mounted on the lower surface of the rotary tray 2, and a hinge groove is horizontally provided on the lower surface of the rotating block 41. A pry bar 42 is hinged in the hinge groove of the rotating block 41, and the pry bar 42 can rotate in the vertical direction. Both ends of the pry bar 42 extend out of the hinge groove of the rotating block 41. The positioning block 43 is nested on the positioning shaft 1, and several positioning grooves are provided on the positioning block 43 along the circumferential direction. One end of the pry bar 42 cooperates with the positioning groove on the positioning block 43 to fix the rotary tray 2 after it has rotated into place.

[0026] The bottom end of the positioning shaft 1 is equipped with a flange, which is connected to the inner wall of the bottom end of the shot blasting machine.

[0027] A sliding groove is provided on the inner wall of the limiting guide groove 21, and a slider is provided on the side of the limiting block 31 to cooperate with the sliding groove.

[0028] The limiting block 31 has an L-shaped structure, and one end of the limiting block 31 protrudes from the upper surface of the upper limit guide groove 21 of the rotary tray 2, which is used to hook the impeller pump casing to limit and fix the impeller pump casing placed on the rotary tray 2.

[0029] The working principle of this utility model is as follows: This utility model uses a rotary tray structure with manually adjustable orientation to support the impeller pump casing for shot blasting. The angle of the impeller pump casing can be adjusted to avoid missing any areas. In addition, by setting a limiting guide groove on the surface of the rotary tray and using a spring to connect the limiting block, the elastic potential energy of the spring is used to tighten the limiting block. The end of the limiting block can pass through the center position hole of the impeller pump casing, tightening and limiting the edge of the center position hole of the impeller pump casing, ensuring that the impeller pump casing is in a stable state during the shot blasting process.

[0030] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A shot blasting fixture for lost-wax casting of impeller pump casing, characterized in that: Includes positioning axis, rotary tray, limit unit and drive module; The positioning shaft is installed vertically inside the shot blasting machine; The rotary tray is disc-shaped and is located on the top of the positioning shaft. A bearing hole is provided at the center of the lower surface of the rotary tray, and a thrust bearing is provided in the bearing hole and connected to the top of the positioning shaft. The rotary tray can rotate horizontally around the positioning shaft. A limit guide groove is provided in a cross shape on the upper surface of the rotary tray. The limiting unit includes limiting blocks and springs; there are four limiting blocks, each disposed in a limiting guide groove of the rotary tray; there are four springs, each disposed in a limiting guide groove corresponding to a limiting block, with one end of each spring connected to a limiting block and the other end connected to the inner wall of the limiting guide groove. The springs use their elastic potential energy to pull the limiting blocks together, thereby limiting and fixing the impeller pump housing placed on the rotary tray. The drive module includes a rotating block, a pry bar, and a positioning block. The rotating block is mounted on the lower surface of the rotary tray, and a hinge groove is horizontally provided on the lower surface of the rotating block. A pry bar is hinged in the hinge groove of the rotating block, and the pry bar can rotate in the vertical direction. Both ends of the pry bar extend out of the hinge groove of the rotating block. The positioning block is nested on the positioning shaft, and several positioning grooves are provided on the positioning block along the circumference. One end of the pry bar cooperates with the positioning groove on the positioning block to fix the rotary tray after it has rotated into place.

2. The shot blasting fixture for a lost-wax casting impeller pump casing according to claim 1, characterized in that: The bottom end of the positioning shaft is provided with a flange, which is connected to the inner wall of the bottom end of the shot blasting machine.

3. The shot blasting fixture for a lost-wax casting impeller pump casing according to claim 1, characterized in that: The inner wall of the limiting guide groove is provided with a sliding groove, and the side of the limiting block is provided with a slider that cooperates with the sliding groove.

4. The shot blasting fixture for a lost-wax casting impeller pump casing according to claim 1, characterized in that: The limiting block has an L-shaped structure, and one end of the limiting block protrudes from the upper surface of the upper limit guide groove of the rotary tray, which is used to hook the impeller pump casing to limit and fix the impeller pump casing placed on the rotary tray.

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